[GHC] #1831: reify never provides the declaration of variables

[GHC]

#1831: reify never provides the declaration of variables
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        Reporter:  guest             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  ⊥
       Component:  Template Haskell  |              Version:  6.8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by parsonsmatt):

 I'd like to register interest in having this available :) My specific use
 case is walking the AST from a given point to capture uses of `throw`,
 `throwM`, `throwIO`, etc. and try to get a list of possible exception
 types that might arise from a given function. eg:

 {{{
 openFile' :: FilePath -> IO (Either IOException String)
 openFile' f = [catch|openFile f|]
 }}}

 It seems like this would be useful for other sorts of static analysis, as
 well.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1831#comment:16>
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